author | Pat Downey <patd@symbian.org> |
Wed, 01 Sep 2010 12:32:13 +0100 | |
branch | RCL_3 |
changeset 33 | 04b7640f6fb5 |
parent 0 | 05da4621cfb2 |
permissions | -rw-r--r-- |
0
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/* |
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* Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: Utils for file operations |
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* |
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*/ |
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|
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|
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package com.nokia.tools.themeinstaller.defrep.operations; |
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import java.io.File; |
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import java.io.FileInputStream; |
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import java.io.FileNotFoundException; |
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import java.io.FileOutputStream; |
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import java.io.IOException; |
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|
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/** |
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* Utils for file operations. |
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*/ |
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public class FileOperationUtils |
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{ |
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// CONSTANTS |
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private static final int READ_BUFFER_SIZE = 1024; |
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private static final String REGEXP_PREFIX = "\\"; |
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private static final char EPOC_DRIVE_SEP = ':'; |
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private static final String EPOC_PATH_SEP = "\\"; |
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private static final char EPOC_DRIVE_LETTER_FIRST_U = 'A'; |
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private static final char EPOC_DRIVE_LETTER_LAST_U = 'Z'; |
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private static final char EPOC_DRIVE_LETTER_FIRST_L = 'a'; |
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private static final char EPOC_DRIVE_LETTER_LAST_L = 'z'; |
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private static final String EPOC32_DIR = "epoc32"; |
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/** |
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* Copy a file to an another location. |
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* |
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* @param aSource Source file |
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* @param aDestination Destination file |
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* @param aAppend If true, the source file contents will be appended to the end of |
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* the destination file. Otherwise, the original file will be overwritten. |
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* @throws FileNotFoundException Thrown if the file can not be found |
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* @throws IOException Thrown if IOException occurs, open streams are also closed |
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*/ |
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public static void copyFile( File aSource, File aDestination, boolean aAppend ) |
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throws FileNotFoundException, IOException |
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{ |
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// Overwrite the existing file, if any |
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if( aDestination.exists() && !aAppend ) |
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{ |
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aDestination.delete(); |
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} |
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// Create the required directory structure for the destination file |
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// (ignore return value) |
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createDirs( aDestination ); |
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// Open streams for input and output |
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FileInputStream input = new FileInputStream( aSource ); |
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FileOutputStream output = new FileOutputStream( aDestination, aAppend ); |
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|
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// Create buffer for the data transfer |
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byte[] buffer = new byte[ READ_BUFFER_SIZE ]; |
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int i = 0; |
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try |
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{ |
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// Read data to the buffer and write it to the output stream until |
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// the whole file is processed |
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while( ( i = input.read( buffer ) ) != -1 ) |
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{ |
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output.write( buffer, 0, i ); |
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} |
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} |
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finally |
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{ |
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if( input != null ) |
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{ |
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input.close(); |
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} |
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if( output != null ) |
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{ |
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output.close(); |
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} |
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} |
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} |
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|
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/** |
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* Create the whole directory structure for the file |
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* |
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* @param aFile File object to be placed at the end of the tree |
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* @return true, if new directories were created |
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*/ |
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public static boolean createDirs( File aFile ) |
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{ |
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// Extract the parent directory |
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String parent = aFile.getParent(); |
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108 |
|
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// Create the whole directory structure |
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File dir = new File( parent ); |
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return dir.mkdirs(); |
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} |
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113 |
|
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/** |
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* Parse Symbian OS file system format path of a Winscw environment path. |
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* This method will search for a directory of which name is one character |
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* long and from a to z. |
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* @param aFile The file to process |
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* @return Path and file name in Symbian OS file system. Returns null if |
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* the file name can not be parsed. |
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*/ |
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public static String parseSymbianFSPath( File aFile ) |
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123 |
{ |
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String result = null; |
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String path = aFile.getPath(); |
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126 |
|
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File file = aFile.getParentFile(); |
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128 |
|
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// Go through all parent directories of the file |
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while( file != null ) |
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131 |
{ |
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// Find a directory of which name is 1 character long |
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String name = file.getName(); |
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if( name.length() == 1 ) |
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135 |
{ |
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// Check that the directory name is an character |
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// from A to Z or a to z |
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char c = name.charAt( 0 ); |
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if( ( c >= EPOC_DRIVE_LETTER_FIRST_U && |
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c <= EPOC_DRIVE_LETTER_LAST_U ) || |
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( c >= EPOC_DRIVE_LETTER_FIRST_L && |
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c <= EPOC_DRIVE_LETTER_LAST_L ) ) |
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143 |
{ |
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result = name; |
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} |
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} |
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// Stop if already reached to the epoc32 directory |
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else if( EPOC32_DIR.equalsIgnoreCase( name ) ) |
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149 |
{ |
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break; |
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} |
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152 |
|
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file = file.getParentFile(); |
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} |
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155 |
|
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if( result != null ) |
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157 |
{ |
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String pattern = File.separatorChar + result + File.separatorChar; |
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159 |
|
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// Find the start of the actual path |
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int pathStart = path.indexOf( pattern ) + pattern.length(); |
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162 |
|
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// Combine the Symbian OS format path of the drive letter, |
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// path separator and rest of the path |
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result = result + |
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EPOC_DRIVE_SEP + |
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EPOC_PATH_SEP + |
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path.substring( pathStart ); |
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169 |
|
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// Replace path separators with Epoc ones |
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pattern = REGEXP_PREFIX + File.separator; |
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String replacement = REGEXP_PREFIX + EPOC_PATH_SEP; |
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result = result.replaceAll( pattern, replacement ); |
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174 |
} |
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175 |
|
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return result; |
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} |
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178 |
|
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/** |
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* Parse Symbian OS file system format path of a Winscw environment path. |
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* @param aFile The file name to process |
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* @return Path and file name in Symbian OS file system. Returns null if |
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* the file name can not be parsed. |
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*/ |
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public static String parseSymbianFSPath( String aFile ) |
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{ |
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File f = new File( aFile ); |
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return parseSymbianFSPath( f ); |
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} |
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} |